86,546 research outputs found
Prenatal visualisation of the torcular herophili by means of a Doppler technology highly sensitive for low-velocity flow in the expert assessment of the posterior fossa: a prospective study
No full textObjective: To evaluate the usefulness of a Doppler technology highly sensitive for low-velocity flow in the antenatal imaging of the torcular herophili (TH) in the second trimester of pregnancy. Design: Prospective study. Setting: Referral Fetal Medicine Unit. Population: Non-consecutive series of singleton pregnancies submitted to antenatal neurosonogram between 20 and 28 weeks of gestation. Methods: A midsagittal section of the fetal brain was obtained by insonating through the anterior fontanelle, then the MV-FlowTM and LumiFlowTM presets were selected to visualise the TH as the posterior confluence of the superior sagittal sinus and the straight sinus. Main outcome measures: Evaluation of the anatomic relationship of the TH with the ‘transpalatal line’ joining the upper bony palate to the fetal skull. Results: A total of 99 pregnant women were recruited, including one fetus with open spina bifida, one with Dandy–Walker malformation (DWM) and two with Blake's pouch cysts. In normal fetuses, the TH appeared to lie on or just below the ‘transpalatal line’. In the cases of Blake's pouch cyst, the position of the TH appeared normal if compared with controls, whereas in DWM a supra-elevated position of the TH in respect of the transpalatal line was demonstrated. Finally, in the fetus with Chiari II malformation the TH was identified below the ‘transpalatal plane’. Conclusions: Prenatal ultrasound visualisation of the TH by means of newly developed Doppler technologies characterised by high sensitivity for low-velocity flow is feasible and allows the indirect evaluation of the insertion of cerebellar tentorium in the second trimester. Tweetable abstract: Prenatal imaging of the torcular herophili using a Doppler technology highly sensitive for low-velocity flow
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
Also By The Same Author: AKTiveAuthor, a Citation Graph Approach to Name Disambiguation
No full textThe desire for definitive data and the semantic web drive for inference over heterogeneous data sources requires co-reference resolution to be performed on those data. In particular, name disambiguation is required to allow accurate publication lists, citation counts and impact measures to be determined. This paper describes a graph-based approach to author disambiguation on large-scale citation networks. Using self-citation, co-authorship and document source analyses, AKTiveAuthor clusters papers, achieving precision of 0.997 and recall of 0.818 over a test group of eight surname clusters
John F. Kennedy telegram to Roosevelt
No full textJersey Homesteads (later the Borough of Roosevelt) was established in the 1930s as an agro-industrial cooperative community. It was established specifically for urban Jewish garment workers, many of whom had emigrated from Europe. President John F. Kennedy sent a telegram to the citizens of Roosevelt, New Jersey, apologizing for not being able to attend the memorial dedication in honor of former President Franklin Delano Roosevelt. (Jersey Homesteads became Roosevelt in 1945 in honor of the president.) President Kennedy expressed his gratitude to the people of Roosevelt for constructing the memorial, and commented that it will serve as a constant reminder of Roosevelt's good works
Transient secondary pseudo-hypoaldosteronism in infants with urinary tract infections: systematic literature review
No full textInfants with a congenital anomaly of the kidney and urinary tract sometimes present with hyponatremia, hyperkalemia, and metabolic acidosis due to under-responsiveness to aldosterone, hereafter referred to as secondary pseudo-hypoaldosteronism. The purpose of this report is to investigate pseudo-hypoaldosteronism in infant urinary tract infection. A systematic review was conducted following PRISMA guidelines after PROSPERO (CRD42022364210) registration. The National Library of Medicine, Excerpta Medica, Web of Science, and Google Scholar without limitations were used. Inclusion criteria involved pediatric cases with documented overt pseudo-hypoaldosteronism linked to urinary tract infection. Data extraction included demographics, clinical features, laboratory parameters, management, and course. Fifty-seven reports were selected, detailing 124 cases: 95 boys and 29 girls, 10 months or less of age (80% of cases were 4 months or less of age). The cases exhibited hyponatremia, hyperkalemia, acidosis, and activated renin-angiotensin II-aldosterone system. An impaired kidney function was found in approximately every third case. Management included antibiotics, fluids, and, occasionally, emergency treatment of hyperkalemia, hyponatremia, or acidosis. The recovery time averaged 1 week for electrolyte, acid–base imbalance, and kidney function. Notably, anomalies of the kidney and urinary tract were identified in 105 (85%) cases. Conclusions:This review expands the understanding of overt transient pseudo-hypoaldosteronism complicating urinary tract infection. Management involves antimicrobials, fluid replacement, and consideration of electrolyte imbalances. Raising awareness of this condition within pediatric hospitalists is desirable. (Table presented.
Logarithmic variance profiles and the corresponding f-1 spectra of temperature fluctuations in turbulent Rayleigh-Bénard convection
No full textWe report experimental results for the temperature variance 2(z) and the corresponding frequency spectra P(f) in turbulent Rayleigh-Bénard convection (RBC) in a cylindrical sample of aspect ratioT= D/L = 1:00 (D = 1:12 m is the diameter and L = 1:12 m the height). The measurements were conducted in the Rayleigh-number range 1011 < Ra < 1:35 1014 and Pr ' 0:8. For Ra = 1:35x1014, 2(z) could be described well by a logarithmic dependence on the vertical position z in a range of z 1 < z < z 2 with z 1 ' 70 and z 2 = 0:1L. Here L=(2Nu) is the thickness of a thin thermal sublayer adjacent to the horizontal plate where the heat flux (denoted by the Nusselt number Nu) is carried mostly by thermal diffusion. In the log layer, we found that the temperature spectra had a significant frequency range over which P(f) f with close to 1. As Ra decreased, increased so that the log layer became thinner. At Ra = 2:05 1011, z 2 < z 1 and therefore there was no range for a log layer. Correspondingly, the temperature spectrum near the horizontal plate did not have the f1 scaling form either
Maine author Franklin F. Gould recalls his first glimpse of the outside world
No full textMaine author Franklin F. Gould recalls his first glimpse of the outside world as he relates how, as a young farm boy in the late 1800\u27s, he drove his father\u27s horses on an errand to an icebound river
Mapping the Discipline of the Olympic Games An Author-Cocitation Analysis
No full textThe authors conducted an author cocitation analysis on prominent authors writing about the Olympics during the 1990s. Author cocitation is an established bibliometric technique that can be used to measure the relative similarities of topics written about by the cited authors. This enables a visual representation of the “intellectual space” of the discipline, in this case the Olympics, to be created for the period under review. So core and peripheral research areas are identified, along with their major contributors. The representation appears as a two-dimensional cluster-enhanced map. Subject expertise was then applied to the results to place labels on the generated clusters of authors and their topics
Ultrasound prediction of adverse perinatal outcome at diagnosis of late‐onset fetal growth restriction
No full textBackground: Abnormal umbilical, cerebral and uterine artery Doppler findings and fetal biometry below the 3rd percentile have been proposed as risk factors for perinatal complications in late-onset fetal growth restriction (FGR). Recent evidence has allowed to reach a consensus on the clinical use of Doppler ultrasound for the monitoring and timing of delivery in early-onset FGR, however there is limited data on the relationship between abnormal Doppler and severity of the growth restriction and adverse outcome when a diagnosis of late-onset FGR is made.
Objective: To evaluate the relationship between the ultrasound parameters measured at diagnosis and perinatal adverse outcome within a cohort of late-onset FGR fetuses.
Methods: This is a multicentre retrospective study between 2014 and 2019 including non-anomalous singleton pregnancies complicated by late-onset FGR, which was defined either by abdominal circumference (AC), estimated fetal weight (EFW) <10th percentile for the gestation or by a reduction of the longitudinal growth of the AC by over 50 percentiles compared to an ultrasound scan performed between 18 and 32 weeks of gestation. Sonographic findings at diagnosis were compared between fetuses with and without adverse outcomes including stillbirth, obstetric intervention due to intrapartum distress, neonatal acidaemia, transfer to neonatal intensive care unit (NICU) and composite adverse perinatal outcome (CAO), which was defined by either stillbirth or the combination of at least two adverse perinatal outcomes.
Results: Overall, 468 cases with full biometry and umbilical, middle cerebral, and uterine artery (UtA) Doppler data were included, among whom CAO was recorded in 53 (11.3%). At logistic regression analysis, only the EFW percentile proved to be independently associated with CAO (p=0.01) and NICU admission (p95th percentile at diagnosis proved to be independently associated with obstetric intervention due to intrapartum distress (p<0.01). The model including baseline pregnancy characteristics and the EFW percentile was associated with an area under the curve of 0.889, 95%CI (0.813-0.966), p<0.001 for CAO. A cut-off value corresponding to the 3.95th percentile was found to better discriminate between cases with and without CAO yielding a 58.5% sensitivity [95% confidence interval (CI) (44.1-71.9)], a 69.6% specificity [95%CI (65.0-74.0)], a 19.8% positive predictive value [95%CI (13.8-26.8)], and a 92.9% negative predictive value [95%CI (89.5-95.5)].
Conclusions: Retrospective data on a large cohort of late-onset FGR fetuses shows that at diagnosis the EFW is the only sonographic parameter independently associated with the occurrence of adverse perinatal outcomes, while a mean UtA PI MoM >95th percentile at diagnosis is independently associated with intrapartum distress leading to obstetric intervention
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